Wrench



'1. GELL.

WRENCH.

APPLICATION HLED JUNE 28, 1919.

341 712 PdtentedJune 1, 19 20.

fillies Gel? UNITED STATES,

PATENT attics.

JAMES GEL'L, F BRANFORD, CONNECTICUT.

Application filed June 28,

To all whom it may concern:

Be it known that I, J AMES GELL, a citizen of the United States, residing at Branford,

' in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Wrenches, of which the following is a specification.

My invention relates to new anduseful improvements in wrenches and more particularly to that type wherein'the jaws of the wrench are locked against movement by the actuation of a pair of handles.

An important object of my invention is to provide a device including a movable jaw having a toothed shank adapted for locking engagement with a toothed member, which toothed member is movable whereby the teeth thereof may be positioned in correct engagement with the teeth of the movable jaw shank.

Another object-of my invention is to provide a device whereby the movable jaws may be easily and quickly moved to the desired adjusted position and also looked against further movements when desired.

A further object of the invention resides in the provision of a pivoted handle and associated parts whereby the movable jaw is rigidly secured in various adjusted positions. Still another object of my invention is to provide a device including two pairs of gripping jaws, one of which is especially adapted for use in connection with nuts, while the other pair is especially adapted for use in connection with pipes.

Other objects and advantages of the invention will become apparent during the course of the following description.

In, the drawings forming a part of the description and wherein like numerals are employed to designate like parts throughout the same,

Figure 1 is a side elevation of my invention.

Fig. 2 is a longitudinal section through the stationary aw thereof, and

Fig. 3 is an edge view of the wrench.

In the drawings wherein'for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 4 designates what may be termed the stationary jaw of the wrench, and is provided with a handle 5, which has its lower free end provided with a screw driver 6.

As more clearly shown in Figs. 2 and 3 of the drawings, the stationary jaw 4 is pro- WRENCH.

Specification of Letters Patent. Patented J une 1, 1920.

bepresently described. One side of the jaw' 4 is provided adjacent its top with an L shaped cut out portion 9, which provides a jaw face or gripping face 10 of one pair of jaws. The same side of the aw 4 is suitably recessed. as at 11, below the opening 7 through the jaw 4, to receive a block 12 having a serrated face and which forms a grip ping face of the other pair of jaws. This block 12 is secured to th'estationary jaw 4 through the medium of a bolt or rivet 13.

The movable jaw of my invention which is indicated in general by the numeral 14, is preferably of T shape, the vertical arm of which provides a shank 15 for the movable jaw, and this shank is provided in its relative upper edge with a plurality of teeth 16. The horizontal portion of the T provides a pair of gripping faces 17 and 18, and are arranged upon opposite sides of the toothed shank 15. The gripping faces 17 and 18 are arranged in different planes, whereby they may abut with the gripping faces 10 and 12 of the stationary jaw, when the wrench is in a closed position. As clearly shown, the gripping face 18 is serrated similar to the face of the block 12 whereby a pipe may be effectively gripped. A stop pin 15' is provided in the free end of the shank 15 to prevent displacement of the jaw 14 from the stationary aw 4.

For cooperation with the toothed shank 15,1 provide a movable toothed block 19 which is slidably mounted within the chambered portion ofthe stationary jaw 4 above the opening 7. The face of the toothed block 19 adjacent the toothed shank 15 is serrated as more clearly shown in Fig. 2, while the opposite ends of the block are reduced as at opposite sides of the block engagevwith opposite interior walls ofth'e chambered portion 8, therefore lateral and longitudinal movement of the toothed member is. prevented, while transverse move'ment of the member 19 or longitudinally of the toothed shank 15 is permitted. The toothed member 19 is also provided with a threaded opening 22, while the upper portion of the end 23 of the jaw 4 is provided with an opening for the reception of a screw or threaded member 24, which is provided with a suitable handle or grip 25. From this, it will be manifest that rotation of the screw 24: will cause the toothed member 19 to move longitudinally of the toothed shank 15. As will be clearly seen in Fig. 2 of the drawings, the end 26 of the toothed member 19 is arcuated upwardly of the toothed face of the shank 15 adjacent the gripping face 10 of the stationary jaw, so that when the handles of the wrench are in a position to permit adjustment of the aws, the rigid jaw may be easily and quickly moved to the desiredposition.

lVithin the chambered portion 8 below the opening 7 I provide a pivoted member 27 which is of substantially L shape, and the free end of the short arm is adapted for engagement with the shank 15, while the long arm of this member is pivotally connected to the stationary jaw by means of a rivet or the like 28. At the juncture of the long and short arm of this L shaped member, I secure one end of a spring 29, the other end of which engages with the shank 27 and normally engages the shank to the dotted line positioned in Fig. 2. For the actuation of this pivoted member 27, I pivot a cam member 30 below the member 27 within the chambered portion 8, by means of a rivet or the like 31. Of course, the upper portion of this cam member is slightly arcuated for engagement with the lower side of the pivoted member 27. The cam member is provided with a cut-out portion 32 for the reception of the tapered free end 83 of a lever which has its upper free end pivotally connected within the chambered portion 8, while the handle 34, of the lever extends substantially parallel to the handle 5 when in a closed position, and is retained in such position by means of a pair of spaced spring clips 35 carried by the handle 5.

To adjust the wrench, the handle of the lever 34: is swung outwardly of the handle 5, as shown in dotted lines in Fig. 2. Since the free tapered end 33'of the lever is engaged with the cut out portion 32 of the cam member through actuation of the lever 34, the arcuated upper surface of the cam member will move downwardly within the cham bered portion 8 and permit the spring 29 of the pivoted member 27 to urge this pivoted member downwardly whereby the free end of the short arm of the member 27 is disengaged from the shank 15 of the movable jaw 14. The movable jaw is then forced downwardly toward the handle 5 of the stationary jaw against the tension of the spring 29 whereby the teeth on the shank 15 may be disengaged from the toothed member 19 so that the movable jaw may be moved to the desired adjusted position. By reason of the spring 29 exerting a pressure upon the shank 15 of the movable jaw, it will be manifest that the movable jaw will be inclined with relation to its co-acting jaws when the handles of' the wrench are open and it will be seen that the arcuated toothed portion 26 of the toothed member 19 will only engage a few of the teeth on the shank 15, and in view of this fact, the toothed shank 15 of the movable jaw may be readily disengaged with only a comparatively few teeth on the arcuated end 26 of the toothed member 19; Either the gripping faces 10 and 17 may be adjusted to grip the sides of a nut, or the gripping serrated faces 12 and 18 may be adjusted to accommodate various size pipes therebe tween.

When the desired adjusted position of the gripping faces has been attained and it is desired to lock them in the desired position, the lever 31 is merely swung toward its coacting handle 5, which action causes the cam surface of the cam member to engage with the underside of the pivoted member 27 to force the free end of the short arm thereof into engagement with the shank 15 of the movable jaw. When this action has been completed, and it is found that the teeth of the shank 15 do not correctly seat within the teeth of the member 19, the threaded member 24; is merely rotated to move the toothed member 19 longitudinally of the toothed shank 15, either one way or the other, so that the teeth thereon are correctly positioned to cooperate with the teeth 16 of the shank 15. The lever 34; may then be forced to its closed position between the spring clip 35, which action will cause the pivoted member 27 to forcibly exert a pressure against the shank 15 whereby the teeth 16 thereof are retained in locked engage ment with the toothed portion of the member 19. The wrench may then be used in the well known manner.

The foregoing description and the drawings have reference to what may be considered the preferred, or approved, form of invention. It is to be understood that I may make such changes in construction and arrangement and combination of parts, mate rials, dimensions, etc., as may prove expedient and fall within the scope of the appended claims.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a wrench, a stationary jaw and a sliding jaw having a toothed shank, the combination with means for moving said sliding jaw to lock the same against movement, of a toothed member adjustable longitudinally of the toothed shank for cooperation therewith to lock said slidable jaw against movement, and said toothed member whereby said member may be moved independently of said shank.

' 2. In a wrench, a stationary jaw having an opening therethrough and a chamber communicating therewith from above, a slidable jaw having a toothed shank operating in said opening, means for normally tilting one end of said shank toward said chamber, a toothed member slidably mounted in said chamber, one end of the toothed surface of said member being arcuated away from said toothed shank to facilitate adjustment of said sliding jaw, and means for forcing the toothed shank of said slidable jaw into engagement with the toothed portion of said member.

3. In a wrench, a stationary jaw having a handle portion, a movable jaw slidably mounted through said stationary jaw and provided with a toothed shank, a pivoted member connected to said stationary jaw and adapted for engagement with said toothed shank, a cam member pivotally connected to said stationar jaw for engagement with said pivoted member, said cam member being provided with a cut out portion, and a lever having one free end for co operation with said out out portion of the cam member.

In testimony whereof I aflix my signature in presence of two witnesses.

JAMES GELL.

Witnesses:

LEONARD JAMES PIERsoN, JAMES ARTHUR GnLL. 

